发明授权
- 专利标题: DMA transfer device and method
- 专利标题(中): DMA传输设备和方法
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申请号: US12528893申请日: 2008-02-28
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公开(公告)号: US09367496B2公开(公告)日: 2016-06-14
- 发明人: Tomoyoshi Kobori
- 申请人: Tomoyoshi Kobori
- 申请人地址: JP Tokyo
- 专利权人: NEC CORPORATION
- 当前专利权人: NEC CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2007-049976 20070228
- 国际申请: PCT/JP2008/053510 WO 20080228
- 国际公布: WO2008/105494 WO 20080904
- 主分类号: G06F13/28
- IPC分类号: G06F13/28
摘要:
To provide a DMA transfer apparatus and a DMA transfer method capable of reducing traffic on a bus between an external shared memory and DMA controller with less additional hardware to effectively use a memory.A pattern generation section 11 is provided in a DMA controller 17 and generates data of a predetermined pattern, such as a zero matrix or unit matrix, in the DMA controller when data is transferred from an external shared memory 14 to an internal memory 15. Further, transfer data read out from the external shared memory is temporarily held in a queuing section 13 for queuing. At this time, switching between the transfer data from the queuing section and predetermined pattern data is made based on the number of the transfer data.
公开/授权文献
- US20100106865A1 DMA TRANSFER DEVICE AND METHOD 公开/授权日:2010-04-29
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